Transmission mechanism.



a a h -%Wweoow Qer It W. A. BESSERDICH.

TRANSMISSION MECHANISM.

APPLICATION FILED JUNE 14. 1913.

1 ,136,644. Patented Apr. 20, 1915.,

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: I WILLIAM A. BEssERDIoH, or CLINTONVILLE, WISCONSIN, ASSIGNOR or ONE-HALF TC- IBERNHARD A. MOSLING, or CLINTONVILLE, WISCONSIN.

TRANSMISSION MECHANISM.

To all whom it may concern:

Be it known that 1, WILLIAM A. Bnssnn- DICH, a citizen of the United States, residing at Clintonville, in. the county of VVaupaca and State of Wisconsin, have invented certain new and useful Improvements in Transmission Mechanism; and I v do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art-to which it 'appertains to make and use the same.

' effecting a positive operative connection between the drive member andthe parts of the drivingaxle of the motor vehicle, whereby spinning of either wheel ofthe axle is pre vented.

Another object is to provide an emergency coupling device adapted to-replace'the differential gearing when the latter, for any reason, becomes inoperative.

In theaccompanying drawings, Figure 1 represents a horizontal section through the transmission mechanism, and showing the fragments of a drive shaft and axle, Fig. 2 represents a fragmentary sectional view of a clutch therefor, and, Fig. 3 represents a fragmentary sectional view through the emergency coupling device adapted to re place the differential gearing in case of breakage of the latter.

Referring to the drawings, the numeral 1 indicates a housing for the mechanism having openings 2 and 3 in the front and rear ends thereof, respectively. The sidesof the housing 1 are adapted to receive sleeves or housings 4 for the axle parts 5 and 6 of a motor vehicle, ;The opening 2 of the housing is normally closed by a removable bearing block 7 and the opening 3 in the rear end thereof is normally closed by a bearing block 8. A differential gearing housing 9 is secured to the front end of the housing 1 and is provided with a removable cover 10 Specification of Letters Patent.

Application filed June 14, 1913.

Serial No. 773,696.

for permitting access to the differential gearing to be hereinafterdescribed.

The part 5 of the axle carries a friction wheel 11 disposed within the housing 1 and meshing or contacting with a friction cone 12. The -hub 13 of the cone 12 is rotatably mounted within an apertured boss 14 of'the block 8 having exterior screw threads, over which is threaded a dust cap 15, for excluding dust from the hearing. The axle G is provided with a friction wheel 16 of the same diameter as the wheel 11 contacting or meshingwitha second cone 17, the hub 18 of which is rotatably received within the boss 19 of the bearin block 7. The cone 12 is fixed on the squared end of an intermediate shaft 20 by avnut 22 and the cone 17 is rotatablymounted adjacent the opposite end thereof. The shaft 20 is disposed at such an angle relative to the line of the axle parts 5 and 6 that the cone 12 is permanently held in contact with the wheel 11 and in spaced relation to the wheel 16 while the cone 17 is permanently held in contact with the wheel 16 and in spaced re lation to the wheel 11.

A oke 23 is rotatably mounted through the orward open end of the differential gearing housing 9 and is afiixed to the rear squared end of the engine or drive shaft 24.

The yoke 23 carries a pair of inwardly extending pins 25 over. which are rotatably mounted bevel gears 26. A bevel gear 27 is nonnotatablysecured to the forward end of the intermediate shaft 20 and meshes with the bevel gears 26. The opposite or rear side of the bevel gears 26 are meshed with a bevel gear 28, rotatably mounted on the intermediate shaft 20 and permanently keyed at 29 to the hub of the friction cone 17, whereby both rotate in unison.

A slidahle clutch member 30 is keyed upon the shaft 20- intermediate the cones 12 and 17, and adjacent the latter. The/clutch member 30 carries a: set of teeth 31 adapt- Patented Apr. 20, 1915.

ed to be locked with the set of teeth of the axleof the vehicle are permitted to rotate at the same speed, the bevel gears 27 and 28 are driven in unison, as in the ordinary the friction cone 12, which is keyed to the M part 6 of the axle through the bevel rear end of the shaft. Similar rotation is transmitted to the friction wheel 16 of the gear 28 and cone 17 keyed to the latter.

It will be apparent that the parts 23, 25, 26, 27 and 28 of the differential gearing will accommodate any variance in the respective speeds ofthe cones 12 and 17, due to the difference in the length of the course taken by the Wheels of the parts of the axle, as when turning. To couple the forward friction cone 17 to the intermediate shaft 20, and thus insure a positive drive through the differential gearing to both parts of the axle the clutch member '30 is moved forward by means of the lever 34 until its teeth are locked with the teeth 32 of the cone 17.

In case of an emergency, as when the differential gearing is broken, the coupling member 35 may be employed: .This-member consists substantially of a sleeve having an enlarged central openin 36 and squared openings 37 communicating therewith and adapted to receive the front end of the in termediate shaft 20 and the rear end of the "drive shaft 24. It is obviousthat this emergency-device 26 will not accomplish the functions bf the differential gearing, yet .it is clearly apparent that said device willbe extremely useful in case\of breakage upon the road where a mechanic is not at han to replace the broken or inoperative parts or to-- render other expert service as would be required.

What I claim is:

friction wheel mounted on the inner end of each of said axles to actuate the same,

a drive shaft, an. intermediate shaft mounted in said housing and playing between said friction Wheels, a differential gearing conmeeting said intermediate shaft to said drive. shaft to actuate the said intermediate shaft,

a friction cone rigidly mounted on one end of said intermediate shaft and frictionally engaging one of said friction Wheels toactuate the same, a second friction cone rotatably and loosely mounted on said intercdiate shaft and frictionally engaging the 60,

second of said friction wheels to actuate the same, said last mentioned friction cone being connected at its outer end to said differential gearing to be actuatedthereby,

and having teeth upon the inner end thereof,

and a clutch device keyed to said intermediate shaft between said frictioncones and said friction wheelsand mounted for 'longi tudinal-ly sliding movement along said intermediate shaft, said clutch device having' 'lo teeth upon its outer end adapted to engage the teeth upon the inner end of said last 'mentioned friction cone to thereby operate .said axles from a 45 A transmission gearing comprisingp 4 housing, axles mounted in said houslng, a 

